Few-Mode Gain-Flattening Filter Using LPFG in Weakly-Coupled Double-Cladding FMF

Recently, few-mode Erbium-doped fiber amplifiers (FM-EDFA) for mode-division multiplexing (MDM) transmission have attracted much interest. In this paper, we propose a novel few-mode gain-flattening filter (FM-GFF) based on long-period fiber gratings (LPFG) in double-cladding few-mode fiber (DC-FMF)....

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Veröffentlicht in:	Journal of lightwave technology 2021-07, Vol.39 (13), p.4439-4446
Hauptverfasser:	Zhu, Jinglong, Yang, Yu, Zuo, Mingqing, He, Qichen, Ge, Dawei, Chen, Zhangyuan, He, Yongqi, Li, Juhao
Format:	Artikel
Sprache:	eng
Schlagworte:	C band Cladding Crosstalk Doped fibers Erbium Erbium-doped fiber amplifier Erbium-doped fiber amplifiers few-mode fibers Flattening Gain flattening Gratings (spectra) long-period fiber gratings Multiplexing Optical fiber amplifiers Optical fiber networks Optical frequency conversion Phase matching Refractive index Refractivity Wavelength division multiplexing
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